As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THE NR 4 BATTERY CHARGER ASSEMBLY DUE A CHANGE, DUE TO FAULTY LEFT OVERWING EXTERIOR EMERGENCY LIGHT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE NR 4 BATTERY CHARGER ASSY IAW EMB 140 AMM 33-50-04. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.